<?php
use yii\helpers\Html;
use yii\widgets\Pjax;
?>

<div class="col-sm-12 col-md-6">
    <?php Pjax::begin(); ?>
    <?= Html::a("Generate Random String", ['site/multiple'], ['class' => 'btn btn-lg btn-primary']) ?>
    <h3>
        <?= $randomString ?>
    </h3>
    <?php Pjax::end(); ?>
</div>

<div class="col-sm-12 col-md-6">
    <?php Pjax::begin(); ?>
    <?= Html::a("Generate Random Key", ['site/multiple'], ['class' => 'btn btn-lg btn-primary']) ?>
    <h3>
        <?= $randomKey ?>
    <h3>
    <?php Pjax::end(); ?>
</div>
